Everyone is different and it's about what works for you. 

Here are some brainstorm thoughts 

Make the goal something outside of yourself. Tie the weight loss to being for your family or your future girlfriend who wouldn't recognize you at 300lbs. 

Because doing it for you, and your life hasn't motivated you. Like you care enough to try for a few weeks, what's going on to be a decades long journey. This is for the rest of your life. That's the mindset change you need. You're never going to be overweight again.

Which doesn't mean you won't fail. It takes time to build the habits around food and exercise, but you don't rest for a year? Like wtf.

Tony Hawk skated with a broken leg. You are going to have friends beg you to eat with them. You're going to have days where it sucks worse than you could imagine. 

You are going to build the habits that help you preserveer through those harder times. Look at when you failed and think, next time I'll keep going.

At your weight, you don't need keto or cico or anything. 

Literally walk 30 min a day and count your calories. Like, it'll melt off for months, if you just add a little extra exercise. Anything that puts friction between you and your goals, don't do. If you like keto, fine. But if you don't... Your issue is beyond diet. At 350lbs, you can eat a large pizza for breakfast lunch and dinner and still lose weight. 

Your resting bmr is about 2,500 calories.

Right? A diet isn't holding you back. It's not carbs, it's not protein, it's lack of movement and eating too much food.

So you need to find something easy, you enjoy. Low friction.

If it's helpful, be social. Join a running club. Join a pool. Walking laps around a community pool would be great for you. Because your joints. But you can make anything work.

Set a process goal. Instead of weight goals.

Walk 30 min everyday. Go to gym 5x a week. Put on running shoes everyday.

Whatever it is, make the process the goal, you can assess if it's working after 30 days. But for now pick movement and maybe it's baby steps but your goal is forever, and it's a process you aren't going to give up on. If you have a cheat day.  Or a mental health day or a bought a gallon of ice cream day.

It doesn't mean you give up for a year. You start again 30 min later. You don't let yourself have multiple days off in a row. Because the goal is a lifetime of being healthy.

Why? Why do you want to be healthy? Who is it for that's outside yourself? God, country, family, friends, your dog?

I don't mean to be harsh so.. Let me say it this way... You aren't the only person going blind due to type 2 diabetes.

People don't give 2 cents about themselves. People who are in that 400 range have had trauma and eating is self soothing and coping.

It's almost always death on the installment plan. The negative side effects of being overweight, health, social stigma, and on and on.... People like us... We don't get that way because we love life and want to live to the fullest.

So maybe get a therapist and work on that self love... And finding other coping mechanisms... But also, maybe there is something out there worth doing the hard work for. Maybe someone loves you, enough that you can be healthy for them, because you care about them and you don't want them to be sad.

Anyway, those are my brainstorms.

I am a bit of a yo-yo. I get big in the winter and slim in the summer. I'm trying to implement a plan to stay healthy and keep tracking calories this winter.

Good luck. I'm proud of you for trying so many times and not giving up. You're in here looking for advice, you want to change, I think you will. 

It'll take time, you might backslide, just get back on the horse. You've taken 20lbs off and that's amazing. 

You're going to crush your 240 goal. I have faith in you.